2- has not used or received any material benefit or value from the goods or services received from the other party that are the subject of the input error. Chapter Four The Effect and Evidential Weight of Electronic Transactions Article (20) Information in the data message shall not be denied legal effect, validity or enforceability solely on the grounds that they are in the form of a data message. Information in the data message shall also not be denied legal effect, validity or enforceability solely on the grounds that it is merely referred to in that data message without details, provided that the data message clearly identifies how to have access to the details of this information, the information is accessible so as to be used for subsequent reference by every person that has a right to access and use the information and the method for accessing the information is clearly identified in the data message and does not place an unreasonable burden on any person that has a right to access the information. Article (21) Where any law requires information or a document to be in writing or identified consequences for the information or document not being in writing, that requirement is satisfied where the information or document is in the form of a data message, provided that the information or document is accessible so as to be used for subsequent reference by every person that has a right to access the information or document. Article (22) Where any law requires the signature of a person or identified consequences for the absence of the signature of a person, that requirement is satisfied if the conditions stipulated in Article (28) of this Law are met. Article (23) Where any law requires certain information or a document to be presented or retained in its original form or identified consequences for the information or document not being in its original form, that requirement is satisfied by presenting or retaining such information or document in the form of a data message provided that the following conditions are met: 10